Update README.md

Author: mielvds

README.md

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-# Triple Pattern Fragments Server <img src="http://linkeddatafragments.org/images/logo.svg" width="100" align="right" alt="" />
-Triple Pattern Fragments server in Java.
+# Linked Data Fragments Server <img src="http://linkeddatafragments.org/images/logo.svg" width="100" align="right" alt="" />
+On today's Web, Linked Data is published in different ways,
+which include [data dumps](http://downloads.dbpedia.org/3.9/en/),
+[subject pages](http://dbpedia.org/page/Linked_data),
+and [results of SPARQL queries](http://dbpedia.org/sparql?default-graph-uri=http%3A%2F%2Fdbpedia.org&query=CONSTRUCT+%7B+%3Fp+a+dbpedia-owl%3AArtist+%7D%0D%0AWHERE+%7B+%3Fp+a+dbpedia-owl%3AArtist+%7D&format=text%2Fturtle).
+We call each such part a [**Linked Data Fragment**](http://linkeddatafragments.org/).
+
+The issue with the current Linked Data Fragments
+is that they are either so powerful that their servers suffer from low availability rates
+([as is the case with SPARQL](http://sw.deri.org/~aidanh/docs/epmonitorISWC.pdf)),
+or either don't allow efficient querying.
+
+Instead, this server offers **[Triple Pattern Fragments](http://www.hydra-cg.com/spec/latest/triple-pattern-fragments/)**.
+Each Triple Pattern Fragment offers:
+
+- **data** that corresponds to a _triple pattern_
+  _([example](http://data.linkeddatafragments.org/dbpedia?subject=&predicate=rdf%3Atype&object=dbpedia-owl%3ARestaurant))_.
+- **metadata** that consists of the (approximate) total triple count
+  _([example](http://data.linkeddatafragments.org/dbpedia?subject=&predicate=rdf%3Atype&object=))_.
+- **controls** that lead to all other fragments of the same dataset
+  _([example](http://data.linkeddatafragments.org/dbpedia?subject=&predicate=&object=%22John%22%40en))_.
+
+This is a **Java** implementation based on Jena. 
 
 ## Build
 Execute the following command to create a WAR file: